Home / 74,687.20-112,030.80-66,522.40

Finding the Fourth Proportional to 74,687.20, 112,030.80 and 66,522.40

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Solution

The fourth proportional to 74,687.20, 112,030.80 and 66,522.40 is: 99,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,687.20 : 112,030.80 = 66,522.40 : x
  2. Step 2: Convert to fraction form
    74,687.20/112,030.80 = 66,522.40/x
  3. Step 3: Cross multiply
    74,687.20x = 112,030.80 × 66,522.40
  4. Step 4: Simplify right side
    74,687.20x = 7,452,557,689.92
  5. Step 5: Solve for x
    x = 7,452,557,689.92/74,687.20
  6. Step 6: Final answer
    x = 99,783.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.